55312747 has 8 divisors (see below), whose sum is σ = 66933216. Its totient is φ = 44621952.

The previous prime is 55312739. The next prime is 55312783. The reversal of 55312747 is 74721355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55312747 - 2³ = 55312739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55312717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232288 + ... + 232525.

It is an arithmetic number, because the mean of its divisors is an integer number (8366652).

Almost surely, 2^55312747 is an apocalyptic number.

55312747 is a deficient number, since it is larger than the sum of its proper divisors (11620469).

55312747 is a wasteful number, since it uses less digits than its factorization.

55312747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464837.

The product of its digits is 29400, while the sum is 34.

The square root of 55312747 is about 7437.2539959316. The cubic root of 55312747 is about 381.0147095356.

The spelling of 55312747 in words is "fifty-five million, three hundred twelve thousand, seven hundred forty-seven".